package com.spring.boot.bean;

import java.lang.reflect.Method;

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.spring.boot.core.cache.redis.RedisService;
import com.spring.boot.core.cache.redis.RedisServiceImpl;

@Configuration
// 启用缓存
@EnableCaching
@SuppressWarnings("rawtypes")
public class RedisCacheBean extends CachingConfigurerSupport {

	@Bean
	public KeyGenerator wiselyKeyGenerator() {
		return new KeyGenerator() {
			@Override
			public Object generate(Object target, Method method, Object... params) {
				StringBuilder sb = new StringBuilder();
				sb.append(target.getClass().getName());
				sb.append(".");
				sb.append(method.getName());
				for (Object obj : params) {
					sb.append(".");
					sb.append(obj.toString());
				}
				return sb.toString();
			}
		};
	}

	@Bean
	public CacheManager cacheManager(RedisTemplate redisTemplate) {
		RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
		// Number of seconds before expiration. Defaults to unlimited (0)
		cacheManager.setDefaultExpiration(3600); // 设置key-value超时时间(秒)
		return cacheManager;
	}

	@Bean
	public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
		StringRedisTemplate template = new StringRedisTemplate(factory);
		// 设为true才能开启事物
		template.setEnableTransactionSupport(true);

		setSerializer(template); // 设置序列化工具，这样ReportBean不需要实现Serializable接口
		template.afterPropertiesSet();
		return template;
	}

	@SuppressWarnings("unchecked")
	private void setSerializer(StringRedisTemplate template) {
		Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		template.setValueSerializer(jackson2JsonRedisSerializer);
	}

	@Bean
	public RedisService getRedisService() {
		return new RedisServiceImpl();
	}
}